2006年VOA标准英语-Scientists Find New Approaches to Fight Ma

By Crystal Park
Washinton, D.C.
15 May 2006
 
watch Malaria¹ report

Malaria kills more than one million people around the world every year. It is especially severe in sub-Saharan Africa, which is home to over 90 percent of all malaria cases. The disease has proven to be elusive² due to the fact that mosquitoes breed quickly and have developed resistance to previously³ effective insecticides. A look at some new approaches scientists are working on to fight malaria.

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Malaria is one of the three most prevalent serious diseases in the world. The others are tuberculosis⁴ and AIDS. Nearly 500 million people are infected worldwide each year. More than one million die.

According to UNICEF, the UN's children's organization, more than 90 percent of all malaria cases are in sub-Saharan Africa. Two thousand African children die daily from the disease.

  
  
Dr. Patrick Kaucher is with the Centers for Disease Control and Prevention. "In rural Africa, one out of every five children born doesn't survive until his fifth birthday."

Malaria is transmitted from person to person via mosquitoes that carry the parasite⁵. Malaria rapidly destroys red blood cells, which deliver oxygen and nutrients⁶ to the rest of the body. The disease is preventable and treatable, but most of Africa does not have adequate resources to do either. 

Marcelo Jacobs-Lorena   
  
Insecticides have proven ineffective since mosquitoes breed very rapidly and develop resistance to them. Johns Hopkins microbiologist Marcelo Jacobs-Lorena says a better approach may lie in the mosquito. "If we could find a way to manipulate the mosquito, to make it a less hospitable⁷ host for the parasite, then we could interfere⁸ with parasite transmission and lessen⁹ the burden of the disease."

The Johns Hopkins Laboratory has introduced a gene¹⁰ into the mosquito that substantially inhibits¹¹ the development of the parasite. But scientists are concerned that what works in the laboratory may not work in the wild.

 
Melinda and Bill Gates
  
Scientists are also working on developing a vaccine¹² that would prevent malaria. Microsoft founder¹³ and billionaire Bill Gates has donated 258 million dollars to fund research.

Funds for malaria research and development amount to a meager¹⁴ 0.3 percent of all medical expenditures¹⁵ worldwide. By contrast, diabetes¹⁶ receives six times more money for research and development even though its estimated cost to a society's productiveness is about one-third of that of malaria.

1 malaria   

n.疟疾

参考例句：

• He had frequent attacks of malaria.他常患疟疾。
• Malaria is a kind of serious malady.疟疾是一种严重的疾病。

2 elusive   

adj.难以表达(捉摸)的；令人困惑的；逃避的

参考例句：

• Try to catch the elusive charm of the original in translation.翻译时设法把握住原文中难以捉摸的风韵。
• Interpol have searched all the corners of the earth for the elusive hijackers.国际刑警组织已在世界各地搜查在逃的飞机劫持者。

3 previously   

adv.以前，先前（地）

参考例句：

• The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
• Let me digress for a moment and explain what had happened previously.让我岔开一会儿，解释原先发生了什么。

4 tuberculosis   

n.结核病，肺结核

参考例句：

• People used to go to special health spring to recover from tuberculosis.人们常去温泉疗养胜地治疗肺结核。
• Tuberculosis is a curable disease.肺结核是一种可治愈的病。

5 parasite   

n.寄生虫；寄生菌；食客

参考例句：

• The lazy man was a parasite on his family.那懒汉是家里的寄生虫。
• I don't want to be a parasite.I must earn my own way in life.我不想做寄生虫，我要自己养活自己。

6 nutrients   

n.（食品或化学品）营养物，营养品( nutrient的名词复数 )

参考例句：

• a lack of essential nutrients 基本营养的缺乏
• Nutrients are absorbed into the bloodstream. 营养素被吸收进血液。 来自《简明英汉词典》

7 hospitable   

adj.好客的；宽容的；有利的，适宜的

参考例句：

• The man is very hospitable.He keeps open house for his friends and fellow-workers.那人十分好客，无论是他的朋友还是同事，他都盛情接待。
• The locals are hospitable and welcoming.当地人热情好客。

8 interfere   

v.(in)干涉，干预；(with)妨碍，打扰

参考例句：

• If we interfere, it may do more harm than good.如果我们干预的话，可能弊多利少。
• When others interfere in the affair,it always makes troubles. 别人一卷入这一事件，棘手的事情就来了。

9 lessen   

vt.减少，减轻；缩小

参考例句：

• Regular exercise can help to lessen the pain.经常运动有助于减轻痛感。
• They've made great effort to lessen the noise of planes.他们尽力减小飞机的噪音。

10 gene   

n.遗传因子，基因

参考例句：

• A single gene may have many effects.单一基因可能具有很多种效应。
• The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。

11 inhibits   

阻止，抑制( inhibit的第三人称单数 )； 使拘束，使尴尬

参考例句：

• A small manufacturing sector inhibits growth in the economy. 制造业规模太小有碍经济增长。
• His bad English inhibits him from speaking freely. 他英语学得不好，这使他不能表达自如。

12 vaccine   

n.牛痘苗，疫苗；adj.牛痘的，疫苗的

参考例句：

• The polio vaccine has saved millions of lives.脊髓灰质炎疫苗挽救了数以百万计的生命。
• She takes a vaccine against influenza every fall.她每年秋季接种流感疫苗。

13 Founder   

n.创始者，缔造者

参考例句：

• He was extolled as the founder of their Florentine school.他被称颂为佛罗伦萨画派的鼻祖。
• According to the old tradition,Romulus was the founder of Rome.按照古老的传说，罗穆卢斯是古罗马的建国者。

14 meager   

adj.缺乏的，不足的，瘦的

参考例句：

• He could not support his family on his meager salary.他靠微薄的工资无法养家。
• The two men and the woman grouped about the fire and began their meager meal.两个男人同一个女人围着火，开始吃起少得可怜的午饭。

15 expenditures   

n.花费( expenditure的名词复数 )；使用；（尤指金钱的）支出额；（精力、时间、材料等的）耗费

参考例句：

• We have overspent.We'll have to let up our expenditures next month. 我们已经超支了，下个月一定得节约开支。 来自《简明英汉词典》
• The pension includes an allowance of fifty pounds for traffic expenditures. 年金中包括50镑交通费补贴。 来自《简明英汉词典》

16 diabetes   

n.糖尿病

参考例句：

• In case of diabetes, physicians advise against the use of sugar.对于糖尿病患者，医生告诫他们不要吃糖。
• Diabetes is caused by a fault in the insulin production of the body.糖尿病是由体內胰岛素分泌失调引起的。